A handful of teams that failed to make impact moves at the July 31 trade deadline were able to make up for it with waiver-wire deals in August.
The Texas Rangers landed Alex Rios, while the Baltimore Orioles got Michael Morse and the Pittsburgh Pirates acquired three bats—John Buck, Marlon Byrd and Justin Morneau. The St. Louis Cardinals finally traded for a veteran reliever in John Axford after standing pat in July.
Now that August has passed, however, the chance to add another player that is eligible for a playoff roster is gone. Here are four contending teams that will regret not adding one final piece to the puzzle for the stretch run.